ID不能得到解决或没有从javacodegeeks教程

Question

我下面从http://www.javacodegeeks.com/2010/10/android-full-app-part-1-main-activity.html

一个Android应用程序教程中，我想我所做的几乎每件事场，但我仍然得到错误说“ID不能得到解决或者不是“试图引用main.xml id的代码中的字段”。 这里是我的MovieSearchAppActivity.java代码

public class MovieSearchAppActivity extends Activity implements OnClickListener { 

private static final String EMPTY_STRING= ""; 
private EditText searchEditText; 
private RadioButton movieSearchRadioButton; 
private RadioButton peopleSearchRadioButton; 
private RadioGroup searchRadioGroup; 
private TextView searchTypeTextView; 
private Button searchButton; 


      @Override 
      protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.main); 
    this.findAllViewsById(); 

    movieSearchRadioButton.setOnClickListener(radioButtonListener); 
    peopleSearchRadioButton.setOnClickListener(radioButtonListener); 
    searchButton.setOnClickListener(new OnClickListener() { 

     @Override 
     public void onClick(View v) { 
      // TODO Auto-generated method stub 
     String query = searchEditText.getText().toString(); 
     if (movieSearchRadioButton.isChecked()){ 
      longToast(movieSearchRadioButton.getText() + " " + query);  
     } 
     else if(peopleSearchRadioButton.isChecked()){ 
      longToast(peopleSearchRadioButton.getText() + " " + query); 
     } 
     } 
    }); 
    searchEditText.setOnFocusChangeListener(new DftTextOnFocusListener(getString(R.string.search))); //error:"search cannot be resolved or in field. 
    int id = searchRadioGroup.getCheckedRadioButtonId(); 
    RadioButton radioButton = (RadioButton) findViewById(id); 
    searchTypeTextView.setText(radioButton.getText()); 

} 
private void findAllViewsById() { 
    EditText searchEditText = (EditText) findViewById(R.id.search_edit_text); //search_edit_text cannot be resolved or is not in field. same for below reference. 
    movieSearchRadioButton = (RadioButton) findViewById(R.id.movie_search_radio_button); 
    peopleSearchRadioButton = (RadioButton) findViewById(R.id.people_search_radio_button); 
    searchRadioGroup = (RadioGroup) findViewById(R.id.search_radio_group); 
    searchTypeTextView = (TextView) findViewById(R.id.search_type_text_view); 
    searchButton = (Button) findViewById(R.id.search_button); 
    } 

这里是我的main.xml

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:orientation="vertical" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" 
> 
<EditText 
    android:id="@+id/search_edit_text" 
    android:text="@string/search" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
/> 
<RadioGroup 
    android:id="@+id/search_radio_group" 
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:orientation="vertical" > 
    <RadioButton 
     android:id="@+id/movie_search_radio_button" 
     android:checked="true" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="@string/movies" /> 
    <RadioButton 
     android:id="@+id/people_search_radio_button" 
     android:checked="false" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     android:text="@string/people" /> 
</RadioGroup> 

<TextView 
    android:id="@+id/search_type_text_view" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:textColor="#ffffff" /> 
<Button 
    android:id="@+id/search_button" 
    android:text="@string/search" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" /> 


</LinearLayout> 

这里是我的strings.xml

<?xml version="1.0" encoding="utf-8"?> 
<resources> 

<string name="hello_World">Search!</string> 
<string name="app_name">MovieSearchApp</string> 
<string name="search">Search</string> 
<string name="movies">Movies</string> 
<string name="people">People</string> 

</resources> 

Answer 1

尝试清理项目和重建。从Eclipse菜单“项目” - >“清理...”。